Figure 3

Diagnostic procedures for bacteriological confirmation of tuberculosis in 158 cases of pulmonary TB. 113 cases were diagnosed through sputum analysis: 72 S+/C+ and 41 S-/C+. *: of 48 subjects who had bronchoscopy because of S- sputum samples, 31 had positive sputum cultures; for 14 subjects, only samples obtained by bronchoscopy were culture positive; 12 bronchoscopy samples were S+. **: S-/C- cases; diagnosis was confirmed in these cases either by histo-pathological examination or culture of non-respiratory samples.